McDonald's Will Stop Using Pink Goop Beef in Its Burgers: Chef Jamie Oliver calls it pink slime. We feel it's more like pink goop. Either way, the ammonium hydroxide soaked pink crap beef is vomit inducing. Thankfully, you won't have to eat it anymore! Kind of. McDonald's has finally caved to the pressure and will ditch the use of the pink goop beef in its burgers.